4.0 TDI Turbo Module 2 Fault Code - Limp Mode
 

Guys, I had my actuator refurbished 2 months ago (complete with warrant) . It throwing up the following codes. Is it possible the codes are relating to another problem (listed in special notes of Ross Tech)? I hate the thought of having to replace the turbo (I did the drives side - it a killer of a job!).

18361 - Turbocharger Control Module 2
P1953 - 000 - Defective - MIL ON
Freeze Frame:
RPM: 0 /min
Torque: 19.5 Nm
Speed: 0.0 km/h
Duty Cycle: 0.4 %
Voltage: 11.86 V
Duty Cycle: 94.5 %
Mass Air / Rev.: 0.0 mg/str
Absolute Pres.: 999.6 mbar

19805 - Control Circuit for Controller for Turbocharger 2 (J725)
P3349 - 002 - Electrical Malfunction - Intermittent
Freeze Frame:
RPM: 0 /min
Torque: 27.3 Nm
Speed: 0.0 km/h
Duty Cycle: 0.4 %
Voltage: 11.78 V
Duty Cycle: 94.5 %
Mass Air / Rev.: 0.0 mg/str
Absolute Pres.: 979.2 mbar

Update: drove 20 mins this morning no faults or limp mode. Could someone advise where the earth connection would be for the turbo 2 actuator? I'm thinking it could just be a bad connection.

Hi did you use vcds to control the actuator to see if its working ok, there is a bulletin on here somewhere to service the actuator on the 4.0tdi.
these turbos are variable vain type so it could be sticky vains on the turbo do I google search on sticky vain turbos you do get diesel additives for this.

cheers trev

Sent unit back and it was repaired again without any extra cost. Appears to be fault free today - so far.